Chapter 13

Chapter 13~ Algebra: Perimeter and Area

http://www.mathplayground.com/area_perimeter.html

http://www.mathplayground.com/PartyDesigner/PartyDesigner.html

http://mrnussbaum.com/zoo-play/

http://www.mathgoodies.com/lessons/vol1/area_rectangle.html

http://www.mathgoodies.com/lessons/vol1/perimeter.html

https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-measurement-topic/cc-4th-area-and-perimeter/e/area-and-perimeter-of-rectangles-word-problems

http://www.mathscore.com/math/practice/Perimeter%20and%20Area%20Word%20Problems/